Just a note, Jesse. I suspect that, like so many other things, decarbonization would also follow the famous Pareto principle, i.e. 20% of the effort will give about 80% of the result. In other words, getting a low-carbon electricity system (~100 gCO2/kWh) will be a lot easier (and faster) than getting an "ultra low" carbon electricity system (~10 gCO2/kWh). Thus, low carbon solutions that still utilize natural gas turbines like Michael suggested will be able to achieve much faster decarbonization than ultra-low carbon solutions that demand a wide range of technological breakthroughs and an entire revamp of the power sector (and, ultimately, several other sectors).
And this is exactly where the incompatibility of nuclear and wind/solar comes in. I'm sure that you can model some very attractive-sounding numbers for a steady-state nuclear-varRE system if you simply assume the cost of flexibility (storage, transmission, demand response) to be low enough. However, I don't think this exercise will be of much practical use at present. What we need is a strategy for getting from here to there which accounts for sunk investments and the contingency that non-fossil flexibility remains prohibitively expensive/impractical for decades to come.
It is well established that (in the current absence of super-cheap storage) nuclear makes the integration of moderate amounts of wind/solar significantly more expensive because of its capital intensive nature. This is part of the reason why RE-based decarbonization pathways don't include nuclear - the gradual integration of increasing amounts of politically popular wind/solar requires the flexibility of a nuclear-free grid.
In summary, yes, of course a nuclear-varRE grid can be feasible in the distant future under the assumption of super-cheap storage/flexibility. However, building towards such a system now (i.e. aggressively building out both wind/solar and nuclear in the same system or building out wind/solar in a nuclear-heavy capacity mix) will soon become prohibitively expensive because intermittency costs of solar/wind will rise much faster, thereby only further delaying decarbonization efforts.